Protect your investment with Peltor’s HY79 replacement hygiene kit. Includes 2 black sealing rings and foam inserts to ensure a proper tight seal. Replace at least twice a year to ensure a constant level of attenuation, hygiene and comfort. Compatible with all Peltor MT, HT, Alert, TacticalPRO, PowerCom, LiteCom series headsets. Features: – Replace at least twice a year to ensure a constant level of attenuation Specifications: – Includes: 2 Cups and Foam Inserts